Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.
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STORMWATER MANAGEMENT CRATE ASSEMBLY WITH TAPERED COLUMNS
Cross-References To Related Applications
[001] This application is based on and claims benefit of priority of U.S.
Provisional Patent Application No. 63/262,228, filed on October 7, 2021; U.S.
Provisional Patent Application No. 63/262,230, filed on October 7, 2021; and
U.S.
Provisional Patent Application No. 63/327,695, filed on April 5, 2022. The
contents of
the foregoing application are incorporated herein by reference in their
entireties.
TECHNICAL FIELD
[002] This disclosure relates generally to systems, apparatus, and methods
for
fluid runoff management. In particular, this disclosure relates to stormwater
storage and
retention of stormwater through use of a stormwater management crate, or
through the
use of a plurality of stormwater management crates formed into a stormwater
management crate assembly.
BACKGROUND
[003] Fluid runoff systems include systems designed to process rainwater or
other fluid runoff, particularly stormwater. These systems can be used to
control water
in areas that may experience overloads in the local drainage system during
periods of
,high precipitation, such as around construction sites and developed urban
areas.
These systems temporarily store and divert water runoff from impervious
surfaces, such
as sidewalks, roads, and parking lots. The system then controls the fluid
discharge back
to the environment to meter rainfall discharge from a site and reduce the risk
of flooding.
Stormwater also carries debris and solid contaminants, such as dirt, sand, and
organic
debris. Fluid management systems are designed to receive and retain
stormwater,
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allowing particulates to settle at the bottom of the chamber before the
stormwater is
released out of the system. Fluid management systems may include above-ground
storage systems such as ponds, swales, or holding tanks. Fluid management
systems
may also include below-ground systems such as underground storage chambers,
concrete drainage structures, thermoplastic storage chambers, or crate-type
water
management systems.
[004] Crate-type water management systems may be used to form a chamber
suitable for managing stormwater runoff. For example, multiple stormwater
management crates may be connected together into a modular array of stormwater
management crates, forming a stormwater management crate assembly. Stormwater
management crate assemblies may be placed underground, typically underneath
parking lots or green spaces. These assemblies may be wrapped in a membrane to
prohibit infiltration of surrounding soil or other aggregates into the
stormwater
management crate assembly, forming a void space within the assembly for the
storage
of stormwater runoff. These underground assemblies accommodate a site's water
volume runoff and treatment requirements and also maximize the site's
buildable area
for other beneficial uses.
[005] During a storm, stormwater or rainwater runoff enters the underground
stormwater management crate assembly, and in some configurations, may exit the
assembly by flowing through a conduit connecting the assembly to another
system
component, such as a basin or another drainage structure. The stormwater
management crate assembly may be placed on a prepared bed of coarse aggregate
or
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stone, and may be backfilled underground with aggregate, earth, or other
suitable
backfill material.
[006] Stormwater carries debris and solid contaminants that can pass into
and
through basins, traps, and filters of conventional stormwater management
systems.
Stormwater may include suspended solids, including dirt, sand, organic debris
such as
leaves, paper, and plastic. Crate-type water management systems may be
configured to
receive stormwater and allow debris to settle to a bottom of the assembly
before the
stormwater is released into the ground or through an outlet or may be used to
restrict
the volume or discharge rate of stormwater runoff from leaving the site.
[007] Existing crate-type water management systems require intensive labor
to
assemble on a project site. Many of the components used to form the stormwater
management crates are cumbersome and heavy to manipulate into place.
Construction
and assembly of the water management crates can be difficult when crate
assembly
components such as the plates and the columns are loosely connected during
initial
assembly. Separable connections may accidently disconnect, destabilizing the
structural integrity of the stormwater management crate. Other problems
include rigid
connections between crate assembly plates and columns that do not allow
flexing or
rotation of the columns, which may place critical stress on the columns during
assembly
or after installation of the stormwater management crates, leading to damage
to the
columns.
[008] Thus, solutions are needed to improve these and other deficiencies in
crate-type water management systems. Such solutions should reduce labor and
assembly costs by reducing the weight of the stormwater management crate plate
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component through structural design improvements to reduce weight and allow
for
easier field assembly of the crate assembly. Other improvements should include
increasing strength and durability of the crate components while maximizing
the void
space in the assembly suitable for storing stormwater. Solutions should also
include
improved connections between support columns and plates so as to permanently
affix
the plates and the columns during assembly, while also providing for rotation
of the
columns to mitigate damaging stress forces on the columns during assembly or
after
installation. Further solutions should allow for some components of the
modular crate
assemblies to be pre-assembled prior to arrival at a project site and
configured for ease
of final assembly upon arrival to the site to streamline and improve the
construction
process.
[009] Existing crate-type solutions may suffer additional problems when
fabricated solely from one type of material. For example, some crate products
may be
formed entirely from a filled plastic polymer, such as glass-filled
polypropylene. Though
columns in stormwater crates formed from glass-filled polypropylene may be
strong, the
stormwater crate assembly may be brittle. Alternatively, other products formed
from an
unfilled polymer, such as virgin polypropylene, may be less brittle than other
products
but may result in relatively weak columns.
[0010] Further solutions to problems in the art of stormwater management
crates should include forming stormwater management crates with component
parts
formed from dissimilar materials, for example, by forming plate components
with
relatively flexible virgin materials and by forming columns with stronger
reinforced
materials. Solutions may include securing stormwater management crate plates
to
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crate columns through dual-mode, insert-molding techniques and these solutions
may
provide appropriate structural components to secure column plates and columns
formed
in this way. Solutions should further consider and address variable shrinkage
rates
encountered when forming component parts fabricated of dissimilar materials in
the
molding processes.
SUMMARY
[0011] The disclosed embodiments describe systems, methods, and devices
for
managing fluid runoff. These systems, methods, and devices may include use of
a
stormwater management crate, or the use of a plurality of stormwater
management
crates formed into a stormwater management crate assembly. For example, in an
embodiment, a stormwater management crate may include a top plate having a
first
plurality of support column attachments and a plurality of support column
assemblies
located below the top plate. The support column assemblies may be affixed to
the top
plate at the support column attachments. The stormwater management crate may
further include a bottom plate having a second plurality of support column
attachments
located below the support column assemblies.
[0012] In one embodiment, one or more of the plurality of support column
assemblies may include an upper portion and a lower portion. The lower portion
may be
affixed to the bottom plate. The support column upper portion may be affixed
to a
corresponding lower portion with a snap connection.
[0013] In one embodiment, the upper portion of the support column
assembly
may include a first set of snap connection hooks and a first set of snap
connection slots
and the lower portion may include a second set of snap connection hooks and a
second
set of snap connection slots. The first set of snap connection hooks may be
configured
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to connect to the second set of snap connection slots, and the first set of
snap
connection slots may be configured to connect to the second set of snap
connection
hooks.
[0014] In one embodiment, the support column assemblies have a tapered
shape. For example, the support column assemblies may be tapered so that the
wide
end of the support column assemblies is positioned against the top or bottom
plate, and
the narrow end of the support column assembly may be located in the middle of
the
column assembly, for example, at a snap connection between the upper portion
and
lower portion of the support column assembly.
[0015] In one embodiment, the support column attachments located on the
top
plate or bottom plate may comprise a bayonet connection. The support column
assemblies may include a column pin integrated toward one end of the support
column
assembly. The column pin may be configured to interface with the support
column
attachment to affix the support column assembly to the top plate. In another
embodiment, the bayonet connection may include a detent configured to receive
the
column pin. The detent may be configured to permit the support column assembly
to
rotate in a clockwise or counterclockwise direction from the center detent
position. In
another embodiment, the bayonet connection further comprises a rib configured
to
prevent the pin from exiting the support column attachment.
[0016] In an embodiment, the top plate may include one or more
stabilization
pins on the upper side of the top plate. Stabilization pins may be configured
to prevent
vertically stacked stormwater management crates from sliding relative to each
other.
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[0017] In an embodiment, the top plate may include one or more column
connection recess covers.
[0018] In an embodiment, a stormwater management crate assembly may be
formed by arranging one or more stormwater management crates into a module
array.
The stormwater management crates may include a top plate having a plurality of
support column attachments and a plurality of support column assemblies
located below
the top plate. The support column assemblies may be affixed to the top plate
at the
support column attachments. The stormwater management crates may include a
bottom
plate having a second plurality of support column attachments located below
the
support column assemblies. The stormwater management crate assembly may
include
one or more side panels contacting at least a portion of the stormwater
management
crates. In an embodiment, the support column attachments of the top plates and
bottom
plates comprise a bayonet connection.
[0019] In an embodiment, the stormwater management crate assembly may
include a membrane wrapped around the one or more stormwater management
crates.
In another embodiment, one of the stormwater management crates is affixed to
an
adjacent stormwater management crate through a hook and slot connection.
[0020] In an embodiment, a first stormwater management crate may be
stacked
vertically on top of a second stormwater management crate within the
stormwater
management crate assembly. The first and second stormwater management crates
may
include stabilization pins between the first and second stormwater management
crates.
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[0021] In an embodiment, one or more of the stormwater management crates
within the stormwater management crate assembly may include a column
connection
recess cover on the top side of the top plate.
[0022] In an embodiment, one or more of the support column assemblies in
the
one or more stormwater management crates within the stormwater management
crate
assembly may include an upper portion and a lower portion which may or may not
be
identical. The lower portion may be affixed to the bottom plate of the
stormwater
management crate. In another embodiment, the support column upper portion may
be
affixed to a corresponding support column lower portion with a snap
connection.
[0023] In an embodiment, a stormwater management crate may include a top
plate having a first plurality of support column attachments and a plurality
of support
column assemblies located below the top plate. The support column assemblies
may be
molded to the top plate at the support column attachments. The stormwater
management crate may further include a bottom plate having a second plurality
of
support column attachments located below the support column assemblies. The
support
column assemblies may include an upper portion and a lower portion. The lower
portion
may be affixed to the bottom plate. In some embodiments, the lower portion may
be
molded to the bottom plate. The support column assembly upper portion may be
affixed
to a corresponding lower portion with a snap connection.
[0024] In an embodiment, the support column attachment may include a
circular
ring circumscribing an aperture in the horizontal plane of the top plate. The
support
column attachment may further include a plurality of stiffening ribs. The
support column
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attachment may also further include a recessed circular column rest located
concentrically within the circular ring.
[0025] In an embodiment, the support column attachments may further
include
one or more tab prongs located between the circular ring and the recessed
circular
column rest and the support column assemblies may include one or more tab
slots
located towards one end of the support column assembly. The support column
assemblies may be molded to the top plate by molding the support column
attachment
tab prongs inside the tab slots.
[0026] In an alternative embodiment, the support column attachments may
include one or more tab slots located between the circular ring and the
recessed circular
column rest. The support column assemblies may include one or more tab prongs
located towards one end of the support column assembly. The support column
assemblies may be molded to the top plate by molding the column assembly tab
prongs
inside the tab slots.
[0027] In an embodiment, the top plate or bottom plate and the support
column
assemblies are formed of dissimilar materials. For example, the top plate and
bottom
plate may be formed from virgin polypropylene and the support column
assemblies may
be formed from glass-filled polypropylene.
[0028] In an embodiment, there may be a partial stormwater management
crate
with a single plate. Such partial stormwater management crates may be arranged
for
shipping and may later be assembled into complete stormwater management
crates.
Partial stormwater management crates may include a plate having a plurality of
support
column attachments and may further include a plurality of support columns
affixed to the
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plate at the support column attachments. In an embodiment, the plurality of
support
columns may be affixed to the plate at the support column attachments through
molding. In other embodiments, the partial stormwater management crates may be
configured to include the snap style connections or bayonet style connections
described
herein.
[0029] Additional features and advantages of the disclosed embodiments
will be
set forth in part in the description that follows, and in part will be obvious
from the
description, or may be learned by practice of the disclosed embodiments. The
features
and advantages of the disclosed embodiments will be realized and attained by
the
elements and combinations particularly pointed out in the appended claims.
[0030] It is to be understood that both the foregoing general description
and the
following detailed description are examples and explanatory only and are not
restrictive
of the disclosed embodiments as claimed.
[0031] The accompanying drawings constitute a part of this specification.
The
drawings illustrate several embodiments of the present disclosure and,
together with the
description, serve to explain the principles of the disclosed embodiments as
set forth in
the accompanying claims.
BRIEF DESCRIPTION OF THE DRAWINGS
[0032] Figure 1A depicts an isometric view of a stormwater management
crate,
consistent with various embodiments of the present disclosure.
[0033] Figure 1 B depicts an isometric view of a plate, consistent with
various
embodiments of the present disclosure.
[0034] Figure 1C depicts an isometric view of a plate flipped upside
down,
consistent with various embodiments of the present disclosure.
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[0035] Figure 1D depicts an isometric view of a plate flipped upside down
with
support column portions, consistent with various embodiments of the present
disclosure.
[0036] Figure lE depicts a side view of a stormwater management crate,
consistent with various embodiments of the present disclosure.
[0037] Figure 2A depicts a support column portion, consistent with
various
embodiments of the present disclosure.
[0038] Figure 28 depicts a bayonet connection in a plate with a support
column
portion, consistent with various embodiments of the present disclosure.
[0039] Figure 2C depicts a bayonet connection in a plate, consistent with
various embodiments of the present disclosure.
[0040] Figure 2D depicts a section view of a bayonet connection in a
plate,
consistent with various embodiments of the present disclosure.
[0041] Figure. 2E depicts a column detail of an exemplary stormwater
management crate using a snap connection, consistent with various embodiments
of
the present disclosure.
[0042] Figure. 2F depicts a cross section view of a snap connection of an
exemplary stormwater management crate, consistent with disclosed embodiments.
[0043] Figure 3A depicts a column snap connection, consistent with
various
embodiments of the present disclosure.
[0044] Figure 38 depicts a section view of a column snap connection
connecting an upper portion and a lower portion of a support column assembly,
consistent with various embodiments of the present disclosure.
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[0045] Figure 4A depicts a stormwater management crate, consistent with
various embodiments of the present disclosure.
[0046] Figure 4B depicts a detailed view of a plate, consistent with
various
embodiments of the present disclosure.
[0047] Figure 4C depicts a side view of two stormwater management crates
stacked vertically, consistent with various embodiments of the present
disclosure.
[0048] Figure 5 depicts two plates stacked for storage and transport,
consistent
with various embodiments of the present disclosure.
[0049] Figure 6A depicts a stormwater management crate assembly with the
side panels omitted for clarity, consistent with various embodiments of the
present
disclosure.
[0050] Figure 6B depicts a stormwater management crate assembly,
consistent
with various embodiments of the present disclosure.
[0051] Figure 6C depicts a stormwater management crate assembly including
side panels, consistent with various embodiments of the present disclosure.
[0052] Figure 6D depicts a side panel, consistent with various
embodiments of
the present disclosure.
[0053] Figure 7A depicts an isometric view of a condensed stormwater
management crate, consistent with various embodiments of the present
disclosure.
[0054] Figure 7B depicts a side view of a condensed stormwater management
crate, consistent with various embodiments of the present disclosure.
[0055] Figure 8 depicts an isometric view of another embodiment of a top
plate
flipped upside down, consistent with various embodiments of the present
disclosure.
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[0056] Figure 9 depicts an isometric view of another embodiment of a
plate with
support column assemblies molded to the plate consistent with various
embodiments of
the present disclosure.
[0057] Figure 10 depicts an isometric section view of another embodiment
of a
plate with support column assemblies molded to the plate, with the section
view cut
through the plate and columns exposing an interior view of the support column
assemblies and support column attachments consistent with various embodiments
of
the present disclosure.
[0058] Figure 11 depicts an isometric view of an embodiment of a support
column attachment consistent with various embodiments of the present
disclosure.
[0059] Figure 12 depicts an interior section view of a plate and support
column
assembly molded to a plate when viewed upside down consistent with various
embodiments of the present disclosure.
[0060] Figure 13 depicts an interior section view of an embodiment of a
column
connection assembly molded to a support column attachment consistent with
various
embodiments of the present disclosure.
[0061] Figure 14 depicts an interior section view of another embodiment
of a
support column assembly molded to a support column attachment consistent with
various embodiments of the present disclosure.
DETAILED DESCRIPTION
[0062] Exemplary embodiments are described with reference to the
accompanying drawings. In the figures, which are not necessarily drawn to
scale, the
left-most digit(s) of a reference number identifies the figure in which the
reference
number first appears. Wherever convenient, the same reference numbers are used
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throughout the drawings to refer to the same or like parts. While examples and
features
of disclosed principles are described herein, modifications, adaptations, and
other
implementations are possible without departing from the spirit and scope of
the
disclosed embodiments. Also, the words "comprising," "having," "containing,"
and
"including," and other similar forms are intended to be equivalent in meaning
and be
open ended in that an item or items following any one of these words is not
meant to be
an exhaustive listing of such item or items or meant to be limited to only the
listed item
or items. It should also be noted that as used in the present disclosure and
in the
appended claims, the singular forms "a," "an," and "the" include plural
references unless
the context clearly dictates otherwise.
[0063] A need has been recognized to improve the efficiency in assembling
stormwater management crate assemblies. Existing crate-type water management
systems require intensive labor to assemble on a project site. It has been
found that
many of the components used to form the stormwater management crates are
cumbersome and heavy to manipulate into place. Construction and assembly of
the
water management crates may be difficult when crate assembly components such
as
the plates and the column assemblies are loosely connected during initial
assembly.
Separable connections may inadvertently disconnect, destabilizing the
structural
integrity of the stormwater management crate. Rigid connections between crate
assembly plates and column assemblies that do not allow flexing or rotation of
the
column assemblies may place critical stress on the column assemblies during
assembly
or after installation of the stormwater management crates, leading to damage
to the
column assemblies.
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[0064] The disclosed embodiments improve these and other deficiencies in
crate-type water management systems. For example, solutions are provided to
reduce
labor and assembly costs by reducing the weight of the stormwater management
crate
plate component through structural design improvements and to allow for easier
field
assembly of the crate assembly. Other improvements may include increasing
strength
and durability of the crate components while maximizing the void space in the
assembly
suitable for storing stormwater. Some disclosed embodiments may include
improved
connections between support column assemblies and plates to permanently affix
the
plates and the column assemblies during assembly, while also providing for
rotation of
the column assemblies to mitigate damaging stress forces on the column
assemblies
during assembly or after installation. In addition, some disclosed embodiments
may
allow for some components of the modular crate assemblies to be pre-assembled
prior
to arrival at a project site and configured for ease of final assembly upon
arrival to the
site to streamline and improve the construction process.
[0065] Reference will now be made in detail to the disclosed embodiments,
examples of which are illustrated in the accompanying drawings.
[0066] Figure 1A depicts an embodiment of a stormwater management crate,
consistent with various embodiments of the present disclosure. Stormwater
management crate 100 may include one or more plates 105. In some embodiments
plate 105 may be constructed of plastic (e.g., polypropylene, HDPE, LDPE, PVC,
polyethylene, polyurethane), metal, and/or any other suitable material.
Plastic
embodiments of plate 105 may be formed, for example, through injection
molding, blow
molding, CNC machining, vacuum forming, polymer casting, 3D printing,
extrusion,
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rotational molding, or any other suitable means. In some embodiments, plate
105 is
configured to support structural loads, such as dead and live loads resulting
from
earthen embankments, surface loads, parking lots, structures, vehicular loads,
for
example the American Association of State Highway and Transportation Officials
(AASHTO) H-20 loading criteria, and/or walking loads. The thickness or gauge
of plate
105 may be determined by the structural load bearing requirements needed for
the
particular plate. Other plates within a stormwater management crate assembly
may be
configured to support a walking live load only may be lighter in weight than a
plate 105
configured to support additional live and dead structural loads.
[0067] In one embodiment, stormwater management crate 100 includes two
plates 105, a top plate and a bottom plate, the bottom plate being located
below the top
plate. The two plates 105 may be used interchangeably in a stormwater
management
crate 100. For example, plate 105 located on the bottom of stormwater
management
crate 100 may be similar to plate 105 located on the top of stormwater
management
crate 100, except that the bottom plate is flipped upside down compared to the
top
plate. Use of interchangeable plates improves efficiency in the manufacturing
and
assembly of stormwater management crates.
[0068] The exemplary stormwater management crate 100 depicted in Fig. 1A
may include support column assemblies 115. Support column assemblies 115 may
be
located between plates 105 in stormwater management crate 100. Support column
assemblies 115 may be constructed of plastic (e.g., polypropylene, HOPE, LDPE,
PVC,
polyethylene, polyurethane), metal, glass reinforced materials, and/or any
other suitable
material. In one embodiment, support column assemblies 115 are formed of
schedule
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40 PVC. In another embodiment, support column assemblies are formed of glass
filled
polypropylene. In another embodiment, support column assemblies are formed of
glass
filled polyethylene. Support column assemblies 115 may be of a dissimilar
material than
plates 105. Support column assemblies 115 may be manufactured to various
lengths
and may include in a non-limiting example, lengths of approximately 20 inches
to 90
inches. Support column assemblies 115 may be assembled from two support column
portions as disclosed herein, for example support column portion 117 as shown
in Fig.
1D.
[0069] Fig. 1B depicts a plate 105 viewed from the top. Plate 105 may
include a
plurality of column connection recesses 145. Column connection recesses 145
connect
support column assemblies 115 to top plate 105. In one embodiment, column
connection recesses 145 comprise a bayonet attachment as described herein.
[0070] In some embodiments, plate 105 may include a plurality of slot
locks 120
and hook locks 125. Slot lock 120 and hook lock 125 may be configured to
interface
with an adjacent plate 105, such that the slot lock 120 of each adjacent plate
105 may
securely connect to hook lock 125 of the adjacent plate 125. In this way,
plate 105 of
stormwater management crate 100 may securely connect to an adjacent plate 105
of a
second stormwater management crate 100, such as the stormwater management
crate
array 600 depicted in Figure 6B.
[0071] Plate 105 may include lattice member 130. In some embodiments,
lattice
member 130 may provide a walking platform suitable for assembly crews to
construct
stormwater management crate 100. Lattice member 130 may include perforations
as
depicted in Figure 1B. The perforations may be designed to reduce the weight
of plate
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105 while maintaining sufficient structural integrity to support a walking
load on plate
105. Plate 105 may also include hand grip 135. Hand grip 135 may be formed to
allow a
single person to grip and lift plate 105.
[0072] Plate 105 may include support member 140. Support member 140 may
provide structural support and integrity to connect the column connection
recesses 145
together into plate 105. For example, Figure 1 B depicts six column connection
recesses
145. The column connection recesses 145 are connected by various support
members
140. Though the plate 105 depicted in Figure 1 B includes six column
connection
recesses 145, plate 105 may comprise more or fewer column connection recesses
145.
For example, plate 105 may include four, eight, or any other number of column
connection recesses 145. Support members 140 may vary in length to create
various
configurations and sizes of plate 105 and stormwater management crate 100 and
may
include lengths of approximately twenty inches to approximately ninety inches,
though
shorter or longer lengths may be used in certain situations to fit specific
site conditions.
[0073] Figure 1C depicts a plate 105 flipped upside down and viewed from
the
bottom. As shown in Figure 1C, one embodiment of plate 105 includes six column
connection recesses 145, each column connection recess 145 capable of
connecting a
support column assembly 115 (not shown in Fig. 1C) to the plate 105.
[0074] Figure 1 D depicts a plate 105 viewed from the bottom with support
column portions 117 connected to plate 105 at column connection recesses 145.
As
shown in Figure 1 D, support column portions 117 may be attached to plate 105
at
column connection recesses 145. Support column portions 117 may be tapered in
shape as shown in Figure 1 D and assembled into tapered shaped support column
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assemblies 115 as shown in Figure 1A. Tapered shaped support column assemblies
may solve problems in the art of stormwater management crate assemblies. For
example, partially assembled stormwater management crates with tapered support
column assemblies may be stacked in a nesting arrangement, for example as
shown in
Fig. 5, allowing compact shipment and transport of stormwater management
crates to a
project site. This reduces shipping and assembly costs. Support column
assemblies 115
are not limited to tapered shapes, and may, in other embodiments, be square,
triangular, cylindrical, or rectangular shaped. Similarly, column connection
recesses
145 may correspond to these alternative shapes of support column assembly 115
and
may also be square shaped, triangular shaped, rectangular shaped, or any other
shape
to interface with a corresponding support column assembly 115. The shape of
the
support column assembly 115 and the column connection recess 145 may dictate
the
type of connection used between the support column assembly 115 and column
connection recess 145. For example, a bayonet connection 205, an embodiment
shown
in Figures 2A and 2B, may be used with cylindrical shaped support column
assemblies
115. Alternative shaped support column assemblies 115 may be unable to use
bayonet
connections 205 and may require snap connections or other connection types,
such as
the snap connection embodiment shown in Figures 2E and 2F. In one embodiment,
support column assemblies 115 connect to plate 105 at column connection
recesses
145 through use of bayonet connections as described herein. Use of a bayonet
connection may form a secure connection between support column assembly 115
and
plate 105. For example, support column assembly 115 may be securely connected
to
plate 105 such that the secure connection cannot be defeated through the use
of
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conventional force by a stormwater crate assembly worker, such as pulling or
rotating
support column assembly 115 by hand. In some embodiments, after a secure
connection has been made between a support column assembly 115 and a plate
105,
the support column assembly 115 and plate 105 can only be separated through
the use
of tools or destructive methods such as prying, sawing, or similar techniques.
[0075] In one embodiment, at least one support column assembly 115 is
separable into two support column portions 117 and may include an upper
portion and a
lower portion. The upper portion and the lower portion of the at least one
support
column assembly 115 may connect to each other through the use of a snap
connection,
such as snap connection 110 described herein. For example, Figure 1D depicts a
plate
105 placed upside down with support column portion 117 attached to plate 105.
In this
arrangement, plate 105 acts as a bottom plate and support column portion 117
acts as
a lower portion of the support column assembly 115 in an assembled stormwater
management crate 100. Plate 105 may be flipped over to act as a top plate. In
such an
arrangement, support column portion 117 acts as an upper portion of the
support
column assembly 115.
[0076] Figure 1 E depicts stormwater management crate 100 viewed from the
side. As shown in Figure 1 E, a stormwater management crate 100 may be formed
by
attaching a plate 105 and its attached support column portions 117 located on
the top of
the stormwater management crate 100 to another plate 105 and its attached
support
column portions 117 located on the bottom of the stormwater management crate
100.
The upper support column portion 117 may connect to the lower support column
portion
117 forming a support column assembly 115 using snap connection 110.
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[0077] Figure 2A depicts an embodiment of a support column portion 117.
Support column portion 117 may include snap connection 110 as further depicted
in
Figure 3A. Snap connection 110 may be configured to interface with another
support
column portion 117 to securely connect the two support column portions 117
into a
support column assembly 115. In one embodiment, support column portion 117
contains support column pin 210. Support column pin 210 may extend outside of
opposite sides of support column portion 117 and may be configured to
interface with a
bayonet connection. For example, support column pin 210 may be positioned to
pass
underneath rib 220 of bayonet connection 205 to thereby attach support column
portion
117 to a plate 105, as described herein. Support column pin 210 may be made of
a
dissimilar material from support column portion 117. For example, support
column pin
210 may be made of metal. Support column pin 210 may be integrally formed in
support
column portion 117. In one embodiment, support column portion 117 is formed
using
injection molded techniques and support column pin 210 is integrated into
support
column portion 117 as part of the injection molding process. In another
embodiment,
support column pin 210 is installed in support column portion 117 after
support column
portion 117 has been fabricated.
[0078] Figure 2B depicts a support column portion 117 connected to plate
105
at column connection recess 145 using a bayonet connection 205. In an
exemplary
embodiment, a user may seek to attach support column portion 117 to plate 105.
Support column portion 117 may include a support column pin 210 that extends
out of
two, opposite sides of support column portion 117. To attach support column
portion
117 to plate 105, the user may insert the support column portion 117 into the
column
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connection recess 145 so that the ends of the support column pin 210 slide
into each of
the pair of slots in two bayonet connections 205 situated on opposite sides of
column
connection recess 145. The user may then rotate support column portion 117 so
that
support column pin 210 located on each side of the support column pass
underneath rib
220 in each of the two bayonet connections 205 situated on opposite sides of
column
connection recess 145. In each bayonet connection 205, upon passing support
column
pin 210 underneath rib 220, support column pin 210 is locked inside bayonet
connection
205. The user may continue to rotate support column portion 117 and support
column
pin 210 until support column pin 210 slides over guide rib 240 and seats into
detent 225.
Once seated in detent 225, support column portion 117 may be rotated
approximately
six degrees in a clockwise or counterclockwise direction. Rotation is enabled
because
support column pin 210 may freely rotate until it encounters bayonet slot wall
245, which
prevents further movement of support column pin 210 within detent 225. Such
connection features may aid in the assembly of stormwater management crates
100.
For example, affixing support column portion 117 to plate 105 may prevent
unwanted or
accidental separation of the support column assemblies 115 from the plate
during
assembly of the stormwater management crates, improving user safety and the
speed
and efficiency of the assembly operation. In addition, the rotation allowance
provided by
guide rib 240 may prevent unwanted torsional stress and strain on support
column
assemblies 115 during or after installation. For example, rigid connections
may resist
minor rotational forces applied to support column assemblies 115 during or
after
installation, resulting in unwanted damage or fractures to support column
assemblies
115. Bayonet slot wall 245 may prevent such damage by allowing minor rotation
of
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support column assembly 115 while also keeping support column assembly 115
permanently affixed within column connection recess 210. Though Figure 2B
depicts an
embodiment with two bayonet connections 205, column connection recesses 145
are
not limited to two bayonet connections 205. Arrangements featuring one, three,
four, or
more bayonet connections 205 may be used in connection with fewer or
additional
support column pins 210.
[0079] Figure 2C depicts an embodiment of a bayonet connection with the
support column portion 117 and support column assembly 115 omitted for
clarity. As
shown in Figure 2B, two bayonet connections 205 located at opposite sides of
support
column recess 145 may be used to secure a single support column portion 117 to
plate
105 by engaging with each end of column pin 210. In some embodiments, column
connection recess 145 may include one or more column connection recess ribs
215, as
shown in Figure 2C. One or more column connection recess ribs 215 may be
spaced
around the perimeter of column connection recess 110. Column connection recess
ribs
215 may be equally spaced around the perimeter of column connection recess 145
or
may have irregular spacing. Column connection recess ribs 215 may act as
linear
guides that direct support column portion 117 into column connection recess
145. In
some embodiments, column connection recess ribs 215 may deflect under
pressure,
creating a dimensional allowance, or tolerance, for support column portion 117
to
interface with column connection recess 145.
[0080] Figure 2D depicts a section view of a column connection detail of
an
embodiment of a bayonet connection 205. Bayonet connection 205 may include rib
220,
detent 225, and rotational guide 240. As shown in Figure 2D, column connection
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recess 145 may include column rest 230 to act as a barrier to prevent support
column
portion 117 and thereby support column assembly 115 from passing through
column
connection recess 110 or top plate 105. Support column rest 230 may act as a
barrier to
prevent support column assembly 115 from passing through column connection
recess
145 or plate 105. Support column rest 230 may also act as a load bearing
platform in
that vertical loads carried by plate 105 are transferred to support column
assembly 115
through contact with support column rest 230.
[0081] Figure 2E depicts a detailed view of another embodiment of column
connection recess 110 featuring snap connection 250. In an exemplary
embodiment,
support column portion 117 may include support column pin 210 where support
column
pin 210 which extends out of one or more sides of support column portion 117.
To
attach support column portion 117 to top plate 105, the user may insert
support column
portion 117 into column connection recess 110 so that the exposed end of
support
column pin 210 aligns with snap connection 250. As support column pin 210 is
pushed
against snap connection 250, snap connection 250 may temporarily deflect due
to the
pressure applied from the connection with support column pin 210. Once support
column pin 210 is pushed below snap connection 250, snap connection 250
springs
back into its original position, affixing support column pin 210 into place
and securely
connecting top plate 105 and support column portion 117, as shown in Figure
2E.
[0082] As show in Figure 2E, column connection recess 110 may include
support column rest 230. Support column rest 230 may act as a barrier to
prevent
support column 115 from passing through column connection recess 110 or top
plate
105. Support column rest 230 may also act as a load bearing platform in that
vertical
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loads carried by top plate 105 are transferred to support column 115 through
contact
with support column rest 230.
[0083] Figure 2F depicts a cross section view of one embodiment of column
connection recess 110 featuring snap connection 250. As shown in Figure 2F,
column
connection recess ribs 215 may extend on either side of support column rest
230. In
some embodiments, two support columns 115 (not shown in Figure 2F) may
interface
with column connection recess 110 on either side of support column rest 230.
For
example, two support columns 115 may interface with column connection recess
110 on
either side of support column rest 230 when multiple stormwater management
crates
are stacked into a stormwater management crate array 600, as shown in Figure
6B.
[0084] Figure 3A depicts a close up view of an embodiment of a snap
connection 110. In some embodiments, snap connection 110 may serve to connect
two
support column portions 117, an upper portion and a lower portion, to form
support
column assembly 115. Snap connection 110 may include one or more snap
connection
hook 305 and one or more snap connection slot 310. Snap connection hook 305
may
be arranged to correspond with snap connection slot 310 on another support
column
portion 117. In an embodiment, snap connection 110 includes two snap
connection
hooks 305 and two snap connection slots 310. The two snap connection hooks 305
and
two snap connection slots 310 may be arranged to correspond with two snap
connection slots 310 and snap connection hooks 305 on another support column
portion 117. In some embodiments, snap connection 110 may include one or more
snap
connection hook 305 and no snap connection slots 310. In other embodiments
where
interlocking support column portions 117 are not identical or symmetrical,
snap
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connection 110 may include one or more snap connection slots and no snap
connection
hooks 305.
[0085] Figure 3B depicts a section view of two support column portions
117
connected together using a snap connection. In one embodiment, to connect
support
column portions 117 together, the user may insert snap connection hook 305
from one
support column portion into column connection slot 310 of a corresponding
support
column portion 117. As support column hook 305 is pushed against support
column slot
310, support column hook 305 may temporarily deflect due to the pressure
applied from
the connection with support column slot 310. Once support column hook 305 is
pushed
through support column slot 310, support column hook 305 springs back into its
original
position, affixing support column hook 305 into place and securely joining
support
column portions 117 together, as shown in Figure 3B. In one embodiment,
support
column portions 117 may be connected to plates 105 at a column connection
recess
145 using, for example, a bayonet connection 205. Two plates 105 and their
connected
support column portions 117 may then be connected together into a stormwater
management crate 100 by connecting the support column portions 117 together
using
the snap connection 110 as described herein.
[0086] Figure 4A discloses an embodiment of a stormwater management crate
100 including column connection recess covers 405 in the plate 105. Column
connection recess covers 405 may be configured to transfer vertical loads to
support
column assemblies 115 and to provide a stable walking surface. For example,
stormwater management crate 100 may be buried underground or surrounded with
an
earthen embankment. Soil loads associated with the embankment or surfaces
located
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above the stormwater management crate 100 may bear on the plate 105. These
loads
may be transferred to support column assemblies 115 through contact with
column
connection recess covers 405.
[0087] In some embodiments, plate 105 may include one or more
stabilization
pins 410, as shown in Figure 4B. Stabilization pins 410 may be integrated into
the top
side of plate 105 and configured to connect with a recess in the bottom of a
second
plate 105. For example, in an embodiment, stormwater management crates 100 may
be
stacked vertically on top of each other. Stabilization pins 410 may be used to
resist
lateral forces acting on stacked stormwater management crates 100 by
connecting the
stacked stormwater management crates 100 together, as shown in Figure 4C. In
one
embodiment, stabilization pins 410 are made of dissimilar materials from plate
105. In
another embodiment, stabilization pins 410 are formed integral to plate 105,
such as by
using injection molding techniques.
[0088] In some embodiments, one or more stormwater management crates 100
may be pre-assembled or partially pre-assembled and delivered to a project
site. For
example, Figure 5 shows an embodiment of a stormwater management crate 100
where two plates 105 and their attached support column portions 117 may be
stacked in
a nesting arrangement for storage and transport. Plate 105 may include one or
more
stacking prongs 510. Stacking prongs 510 may be formed integrated to plate
105.
Stacking prongs 510 may provide support to vertically stacked plates 105 and
support
columns 115 as shown in FIG. 5.
[0089] In other embodiments, multiple stormwater management crates 100
may
be preassem bled into a partial stormwater management array and delivered to a
project
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site. For example, two or three stormwater management crates 100 may be
vertically
stacked and connected to each other by connecting support column portions 117
to
column connection recesses 145. Such preassembled partial stormwater
management
arrays may then be further assembled into a stormwater management crate array
at a
project location by connecting upper and lower portions of support column
portions 117
using snap connections 110.
[0090] Multiple stormwater management crates 100 may be stacked
vertically.
Figure 6A depicts an exemplary embodiment where three stormwater management
crates 100 are vertically stacked on top of each other. In this arrangement,
each
stormwater management crate is formed by connecting support column portions
117 to
plates 105 at column connection recesses 145 using bayonet connections 205,
and
then connecting the support column portions 117 together at snap connection
110,
creating support column assemblies 115 and forming three stormwater management
crates 100. The three stormwater management crates 100 are then stacked
vertically,
using stabilization pins 410 between two vertically stacked stormwater
management
crates to provide lateral support. The top stormwater management crate 100
includes
connection recess covers 405 in plate 105 at the top of the stormwater
management
crate 100 to fill the void space in the column connection recesses 145,
provide
structural reinforcement, and transfer vertical loads from the surface above
the stacked
stormwater management crates 100 down through the support column assemblies
115
to the lower-most plate 105.
[0091] In some embodiments, multiple stormwater management crates 100 may
be assembled into stormwater management crate array 600. For example, Figure
6B
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depicts an isometric view of a stormwater management crate array 600, with
some side
panels omitted for clarity. In some embodiments, the stormwater management
crate
array 600 may be formed by connecting multiple stormwater management crates
together. For example, Figure 6B depicts a stormwater management crate 600
comprising six stormwater management crates 100. At the uppermost layer, two
separate plates 105 are linked together in a horizontal plane through slot
connections
120 and hook connections 125. Each of the two top plates 105 includes six
support
column assemblies 115 connected to the plates 105 at column connection
recesses
145. The support column assemblies 115 extend down therefrom and connect to
two
plates 105 below the support column assemblies 115. The two stormwater
management
crates 100 depicted in Figure 6B are stacked on top of another layer of two
stormwater
management crates 100 and are secured together through the use of column
connection pins 410 (not depicted in Figure 6B) as described herein. An
additional layer
of two stormwater management crates 100 is located below the top two layers of
stormwater management crates 100 and includes similar connections at column
connection recesses 145. In this way, stormwater management crate array 600,
as
depicted in Figure 6B, is made of twelve plates 105, each pair of plates 105
with six
support column assemblies 115. Though Figure 6B depicts an array formed from
six
stormwater management crates, one skilled in the art will appreciate that the
array of
stormwater management crates 600 may be composed of any number of
configurations
of stormwater management crates 100 to suit the site conditions and
requirements. For
example, more or fewer plates, column assemblies, or base plates can be used.
In
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addition, the number of column assemblies in a particular stormwater
management
crate 100 can vary within a single stormwater management crate array 600.
[0092] The numbers of column assemblies 115 extending from a particular
plate
105 in a stormwater management crate array 600 may depend on the position of
the
plate 105 within the array and the structural loading requirements associated
with that
position. For example, the interior plates 105 within the array may have six
column
assemblies, while the peripheral plates 105 may have seven, eight, or more
column
assemblies to give more structural support to the perimeter of the stormwater
management crate array 600.
[0093] In another embodiment, plates 105 included in the stormwater
management crate array 600 may have different gauges or thicknesses depending
on
their location within the stormwater management crate array 600 and the
structural
requirements associated with the location. For example, the plates 105 located
at the
top of the stormwater management crate array 600 may be sized to support
structural
requirements for surface loads placed above the stormwater management crate
array
600, vehicular loads, and walking loads. For example, stormwater management
crate
array 600 may be buried underneath fill material, and a site improvement such
as a
parking lot may be constructed above the fill material. In this example, the
plates 105
located at the top of the stormwater management crate array 600 may be sized
to
support the loading requirements of the fill material, parking lot, and live
loads
associated with vehicular traffic. These structural loads may be transmitted
to the plates
105 located at the bottom of the stormwater management crate array 600 through
support column assemblies 115. Plates 105 located at the bottom of the
stormwater
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management crate array 600 may be sized to transmit the total weight of these
loads
and the weight of the stormwater management crate array 600 to the surface
below
stormwater management crate array 600, and also to support the soil and water
pressures located below the ground surface. Plates 105 located in between the
top and
bottom plates do not carry the same loads, and may be sized to support a
walking load
only, and therefore may be formed of lighter gauge material. In an embodiment,
plates
105 located in the interior of the stormwater management crate array 600 are
sized to
support a walking load to accommodate installation crews during assembly of
the
stormwater management crate array 600, permitting these interior plates 105 to
be
much lighter than the top or bottom plates 105, which reduces material costs
and weight
and improves efficiencies in the speed of installation of stormwater
management crate
array 600 because the intermediate top plates 105 may be more easily handled
and
lifted by an installation crew.
[0094] Figure 6C. depicts an isometric view of a stormwater management
crate
assembly, including the side panels. In an embodiment, a stormwater management
crate assembly 600 may be formed by attaching one or more side panels 605 to
an
array of stormwater management crates 100. Side panel 605 may have a variety
of
shapes, including a flat shape or a convex shape. In the embodiment depicted
in Figure
6C, side panel 605 may have, for example, a convex shape and may span the
lengths
of one or more stormwater management crate portions. In one embodiment, side
panel
605 may have the same length as a single stormwater management crate 100 and
may
be equal to twice the width of a single stormwater management crate 100. For
example,
Figure 6C depicts side panel 605 spanning the width of two stormwater
management
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crates 100 and another side panel 605 spanning the length of one stormwater
management crate 100. Side panel lengths are not limited to the configuration
depicted
in Figure 6C and may be sized to span the length of a single stormwater
management
crate, four stormwater management crates, or any number of stormwater
management
crates depending on the site conditions.
[0095] Side
panel 605 may interlock with adjacent side panels for stability and
structural support. In some embodiments, side panel 605 may include side panel
locks
610 as depicted in Figure 6D. Each side panel 605 may have complementary side
panel
locks 610 suitable to interface with adjacent side panels for structural
support and
stability. Side panels 605 may be interlocked together through side panel
locks 610 so
that side panels 605 do not touch support column assemblies 115 or transmit
structural
load directly to support column assemblies 115. In one embodiment, side panels
605
are designed and sized to support lateral earthen and water pressure loads and
are not
designed to carry vertical loads through side panels 605. That is, vertical
loads such as
earthen embankments, parking lots, or the like located above stormwater
management
crate assembly 600 are carried by the uppermost plates 105 to support column
assemblies 115 down to bottom plates 105 without transmitting the vertical
loads to side
panels 605. Such a design allows side panels 605 to be constructed of
relatively light
material which aids in speed and efficiency of manufacturing and installation
costs due
to a reduction in the weight of the material of the side plates. In another
embodiment,
side panels are configured to attach to a plate 105 and contact one or more
support
column assemblies 115.
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[0096] Side panels 605 may be manufactured in various heights. For
example,
site conditions such as water quantity, depth of water table, types of soil,
developable
land area, or other considerations may determine a design height for
stormwater
management crate assembly 600. Side panels 605 may vary in height to fit the
design
conditions. In one embodiment, side panels 605 may be manufactured with two
different
heights within a stormwater management crate assembly 600. For example, a side
panel 605 may have a height equal to the height of a stormwater management
crate
100 within the stormwater management crate assembly. The stormwater management
crate assembly may include a partial stormwater management crate that includes
only
one set of support column portions 117, for example partial stormwater
management
crate 700 depicted in Figure 7A. Partial stormwater management crate 700 may
be
approximately half the height of other stormwater management crates 100 within
stormwater management crate assembly 600. Side panels 605 may be fabricated
with a
height to correspond with the height of partial stormwater management crate
700. In
one embodiment, side panels 605 may be fabricated with heights of 15 inches
and 30
inches. Using side panels with combinations of these two heights, various
stormwater
management crate assemblies 600 can be assembled in any 15 inch height
increment.
[0097] In yet other embodiments, some stormwater management crates 100
within the stormwater management crate assembly 600 may not have side panels
but
may instead be placed against another surface, such as a retaining wall, sheet
piles, an
underground structure, or a different underground stormwater management
system.
[0098] Figure 78 depicts an embodiment of a condensed stormwater
management crate 700. Condensed stormwater management crates 700 may be used
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in certain configurations with stormwater management crates 100 in a
stormwater
management crate assembly 600 to fit certain site conditions. As shown in
Figure 7B, a
condensed stormwater management crate 700 may include one or more partial
support
column portions 117. In an embodiment, the one or more partial support column
portions 117 may connect to two plates 105, one at each end of the support
column
portion 117 and may not be directly connected to another partial support
column portion
117. This results in a condensed stormwater management crate 700 that is
approximately half the height of a stormwater management crate 100. When used
in a
stormwater management crate assembly 600, condensed stormwater management
crate 700 may be placed on the top layer of component stormwater management
crates
within the assembly. This allows for construction of a stormwater management
crate
assembly that is smaller in height and therefore capable of fitting various
site conditions.
[0099] In one embodiment of a condensed stormwater management crate 700,
support column portions 117 may connect to plates 105 using one or more column
connection types. For example, the lower end of support column portion 117 may
connect to plate 105 using a bayonet connection 205, and the top portion of
support
column portion 117 may connect to plate 105 using a snap connection. In
another
embodiment, the top end of support column portion 117 may connect to plate 105
using
a bayonet connection 205, and the lower end portion of support column portion
117 may
connect to plate 105 using a snap connection. In yet another embodiment, both
ends of
support column portion 117 may connect to each top plate 105 using a snap
connection.
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[00100] Stormwater management crate assembly 600 may be used to
temporarily retain fluids, such as stormwater runoff, in a stormwater
management
system. The stormwater management system may include an inlet apparatus
configured to receive runoff from a surface-level drain. The stormwater
management
system may also include a stormwater management crate assembly, such as
stormwater management crate assembly 600. The stormwater management system
may also include an inlet pipe configured to extend between, and to fluidly
connect, the
inlet apparatus with an inlet end of the stormwater management crate assembly.
The
stormwater management system may also include a filtration fabric configured
to be
situated beneath at least a portion of the bottom of the stormwater management
crate
assembly. The filtration fabric may be configured to capture sediment from the
runoff in
the stormwater management crate assembly while the runoff flows out of the
stormwater management crate assembly. The stormwater management system may
also include a non-woven geotextile fabric, bituminous covering, synthetic
polymer
plastic sheeting, or other suitable geotextile fabrics configured to cover the
exterior
surface of the side panels of the stormwater management crate assembly. The
stormwater management crate assembly may be fluidly connected with the inlet
apparatus and may be configured to receive the runoff from the inlet apparatus
and to
disperse runoff into at least one of the earth or an outlet, such as an
underground
drainage structure. In some embodiments, stormwater management crate
assembly 600 may be configured to leach stormwater to the surrounding soil
through a
water pervious geotextile sheeting. In other embodiments, stormwater
management
crate assembly 600 may be wrapped in a water impermeable sheeting and may then
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retain stormwater until it is pumped out of the assembly or passed through a
restrictive
flow control in an outlet.
[00101] Stormwater management crates may be fabricated using certain
molding
techniques. In an embodiment, insert molding techniques are used to secure
plates and
column components together. Insert molding may refer to a method of forming
plastic
components (e.g., polypropylene, HDPE, LDPE, PVC, polyethylene, polyurethane)
with
at least two separate shots of molding where one component is then
incorporated into
another component. For example, in an embodiment, a plate component may be
fabricated and then a column assembly component may be formed separately in a
recess of the plate component. In another embodiment, the column assemblies
may be
formed first and the plate component may be molded around the column
assemblies.
Both plates and column assemblies may be made in the same molding press, for
example where the molding tool rotates, or where parts are transferred from
one side of
the tool to the other. In another embodiment, two separate molding presses may
be
used, for example, in which molded parts from a first press are transferred to
a second
press for insert molding. Such techniques may provide various solutions or
improvements over existing art. For example, though molding plates and column
components together may not allow for rotation of columns in the column
connection
sockets as described above, an insert molding approach will yield a secure
attachment
between plates and columns which may provide better resistance to racking
actions in a
stormwater crate assembly and may also provide improved impact resistance
after
assembly.
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[00102] Stormwater management crates that use insert molding techniques to
secure plates and column components may advantageously use dissimilar
materials
between crate components to take advantage of beneficial effects. For example,
in an
embodiment involving insert molding, stormwater crate columns may be formed of
glass-filled polypropylene to take advantage of its superior strength and
ability to resist
compressive forces whereas the plate components may be formed of virgin
polypropylene to take advantage of its superior flexibility. As described
above, the
majority of compressive forces in the stormwater crate assembly may pass
through the
columns and not to the plate components, so the plate components may not
require the
additional strength of glass-filled reinforcement.
[00103] After injection, injectable plastics may shrink as the material
cools after
being injected into a mold. The amount of shrinkage may depend on the type of
materials used, the size of the mold, the quantity of materials used, or other
factors.
Variable shrink rates between different materials may be considered to secure
component pieces together. For example, virgin polypropylene may have a shrink
rate
as high as .021 inch/inch, while a twenty percent glass-filled polypropylene
mixture
might have a shrink rate around .004 inch/inch. In an embodiment, plates may
first be
formed of virgin polypropylene and column assemblies formed of glass-filled
polypropylene may be formed second in a recess of the first-formed plate. The
plate
may then shrink onto the column assembly to secure the column assembly into
the
plate because the higher shrink rate of the plate compared to the shrink rate
of the
column assembly results in the plate shrinking around the column assembly,
thereby
locking the column assembly into the plate. Plates and column assemblies are
not
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limited to the combination of virgin polypropylene and glass-filled
polypropylene and
may include other materials such as polypropylene, HDPE, LDPE, PVC,
polyethylene,
or polyurethane. Though in some embodiments the plate components and the
column
assembly components are secured through the variable shrinkage between
components, in other embodiments undercut features may be incorporated to
secure
plate and column assembly components together. An undercut feature may include
a
structural component imbedded into the plate or column (or both) that
restrains the
components together. Undercut features may be included in embodiments that
employ
dissimilar materials between components and may be used to secure components
together in combination with the variable shrinkage rates. In other
embodiments,
undercut features are employed to secure column assembly and plate components
together when the column and plate components are formed from common
materials,
and thus, do not have variable shrinkage rates. Various embodiments of certain
undercut features are further described in reference to Figures 8-14.
[00104] Figure 8 depicts an isometric view of another embodiment of a top
plate
flipped upside down, consistent with various embodiments of the present
disclosure.
Though described as a top plate flipped upside down, in some embodiments
bottom
plates are flipped versions of top plates, so the description of top plates
flipped upside
down may equally apply to bottom plates. In an embodiment, plate 800 may
include one
or more slot locks 805 and hook locks 810. Slot locks 805 and hook locks 810
may
correspond to slot locks 120 and hook locks 125 described herein. Slot locks
805 and
hook locks 810 may be configured to interface with an adjacent plate 800 in a
stormwater crate assembly. Plate 800 may include hand grip 815. Hand grip 815
may
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correspond to hand grip 135 described herein. Hand grip 815 may be formed to
allow a
single person to grip and lift plate 800. Plate 800 may include a plurality of
support
column attachments 820. For example, in an embodiment, plate 800 may include
six
support column attachments 820 as depicted in figure 8, though alternative
embodiments with two, four, or eight support column attachments may be used.
As
shown in Figure 8, support column attachments 820 may be a circular ring
circumscribing an aperture in the horizontal plane of the top plate. Column
rest 830 may
be located in a recessed position concentrically within the circular ring of
the support
column attachment 820.
[00105] Figure 9 depicts an isometric view of another embodiment of a
plate with
support column assemblies molded to the plate consistent with various
embodiments of
the present disclosure. As shown in Figure 9, a plurality of support column
assemblies
900 may be molded to the plate 800 at support column attachment 820. Support
column
assemblies 900 may be tapered in shape, with a wider end at the support column
attachment 820 and a narrower end extending away from the plate 800. Similar
to
Figure 1A, two plates 800 with support column assemblies 900 may be stacked
vertically and may be connected at the narrow ends of the tapered support
column
assemblies through the use of snap connections.
[00106] Figure 10 depicts an isometric section view of another embodiment
of a
plate with support column assemblies molded to the plate, with the section
view cut
through the plate and columns exposing an interior view of the support column
assemblies and support column attachments consistent with various embodiments
of
the present disclosure. For example, Figure 10 shows an interior cutaway view
of a
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support column assembly 900. As is shown in Figure 10, support column
assemblies
900 abut column rest 830. Support column attachments 820 may also include a
plurality
of stiffening ribs 1005. Stiffening ribs 1005 may provide structural support
and increase
rigidity of support column attachments 820.
[00107] Figure 11 depicts an isometric view of an embodiment of a column
connection attachment consistent with various embodiments of the present
disclosure.
As shown in Figure 11, support column attachments 820 may have a circular
ring,
though other shapes such as squares or triangular shapes may be used in
alternative
embodiments. Column rest 830 may be located in a recessed position
concentrically
within the circular ring of the support column attachment 820. Column rest 830
may also
demark a separation between stiffening ribs 1005 and the portion of the
support column
attachment 820 that receives the support column assembly 900. Figure 11
depicts a
plurality of tab prongs 1100 located between the circular ring and the
recessed circular
column rest 830. The tab prongs 1100 may act as an undercut feature as
described
above. For example, support column assemblies 900 may be formed with a
reciprocal
divot that encases tap prongs 1100, locking the support column assembly 900 to
the tab
prong 1100 thereby securing support column assembly 900 to the support column
attachment 820 and the plate 800.
[00108] Figure 12 depicts an interior section view of a plate and support
column
assembly molded to a plate when viewed upside down consistent with various
embodiments of the present disclosure. As is shown in Figure 12, support
column
assembly 900 may abut column rest 830 and may further encase tab prong 1100.
The
cutaway image of Figure 12 also depicts a cutaway of the snap connections used
to
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connect column assemblies 900 when stacked vertically to another column
assembly
900. Column assembly 900 may include snap connector 1210 inside of a recess
1205.
Protrusion 1210 may include an orifice in the top (not shown in Figure 12) to
receive a
reciprocal snap connector 1210 from another column assembly 900. The snap
style
connection of column assembly 900 may correspond to the snap connection hooks
305
snap connection slots 310 described above and depicted in Figure 3A.
[00109] Figure 13 depicts an interior section view of an embodiment of a
column
connection assembly molded to a support column attachment consistent with
various
embodiments of the present disclosure. As is shown in Figure 13, column 900
may
include a one or more divots or tab slots 1300 that correspond to tab prong
1100 in the
support column attachment 820. In an embodiment, plate 800 is formed in a
first
molding and support column assembly 900 is formed in a second insert molding
injection so that support column assembly 900 is formed inside the support
column
attachment 820 and divot 1300 is formed encloses tab 1100. This connection may
secure the support column assembly 900 to the plate. In another embodiment,
the
support column assemblies 900 are formed first, and the plate 800 is formed
around the
support column assemblies 900 so that tabs 1100 are inserted into the divots
1300.
[00110] Figure 14 depicts an interior section view of another embodiment
of a
support column assembly molded to a support column attachment consistent with
various embodiments of the present disclosure. As shown in Figure 14, column
900
may have one or more protruding tab prongs 1405 around the base of the column.
Protruding tab prongs 1405 may correspond to one or more tab slot 1400 in a
column
connection assembly. Support column assembly 900 may be formed so that one or
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more protruding tab prong 1405 locks support column assembly 900 by fitting
inside the
tab slot 1400 in the column connection assembly. A support column attachment
may
further have support ribs 1410 around the outside of the base of the support
column
assembly 900.
[00111] The foregoing description has been presented for purposes of
illustration. It is not exhaustive and is not limited to precise forms or
embodiments
disclosed. Modifications and adaptations of the embodiments will be apparent
from
consideration of the specification and practice of the disclosed embodiments.
For
example, while certain components have been described as being coupled to one
another, such components may be integrated with one another or distributed in
any
suitable fashion.
[00112] Moreover, while illustrative embodiments have been described
herein,
the scope includes any and all embodiments having equivalent elements,
modifications,
omissions, combinations (e.g., of aspects across various embodiments),
adaptations
and/or alterations based on the present disclosure. The elements in the claims
are to be
interpreted broadly based on the language employed in the claims and not
limited to
examples described in the present specification or during the prosecution of
the
application, which examples are to be construed as nonexclusive. Further, the
steps of
the disclosed methods can be modified in any manner, including reordering
steps
and/or inserting or deleting steps.
[00113] The features and advantages of the disclosure are apparent from
the
detailed specification, and thus, it is intended that the appended claims
cover all
systems and methods falling within the true spirit and scope of the
disclosure. As used
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herein, the indefinite articles "a" and "an" mean one or more." Similarly, the
use of a
plural term does not necessarily denote a plurality unless it is unambiguous
in the given
context. Words such as "and" or "or" mean "and/or" unless specifically
directed
otherwise. Further, since numerous modifications and variations will readily
occur from
studying the present disclosure, it is not desired to limit the disclosure to
the exact
construction and operation illustrated and described, and, accordingly, all
suitable
modifications and equivalents may be resorted to, falling within the scope of
the
disclosure.
[00114] Other embodiments will be apparent from consideration of the
specification and practice of the embodiments disclosed herein. It is intended
that the
specification and examples be considered as example only, with a true scope
and spirit
of the disclosed embodiments being indicated by the following claims.
43
